fix: don't send sync messages for outdated changes

ts/models/message.ts

@@ -1023,10 +1023,9 @@ export class MessageModel extends Backbone.Model<MessageAttributes> {
         throw new Error('Cannot trigger syncMessage with unknown convo.');
       }
 
-      // TODO things be broken
-      // debugger;
       const expireUpdate = await checkForExpireUpdateInContentMessage(content, conversation);
 
+      if (!isEmpty(expireUpdate) && expireUpdate.lastDisappearingMessageChangeTimestamp) {
         const syncMessage = buildSyncMessage(
           this.id,
           dataMessage as SignalService.DataMessage,
@@ -1040,6 +1039,11 @@ export class MessageModel extends Backbone.Model<MessageAttributes> {
           message: syncMessage,
         });
       }
+    } else {
+      // NOTE if the expireUpdate is not defined then this settings is most likely out of date so we should not sync it
+      return;
+    }
+
     this.set({
       sentSync: true,
     });

ts/session/utils/sync/syncUtils.ts

@@ -386,11 +386,23 @@ export const buildSyncMessage = (
   }
   // don't include our profileKey on syncing message. This is to be done by a ConfigurationMessage now
   const timestamp = _.toNumber(sentTimestamp);
-  if (dataMessage.flags === SignalService.DataMessage.Flags.EXPIRATION_TIMER_UPDATE) {
-    if (!isEmpty(expireUpdate) && expireUpdate.lastDisappearingMessageChangeTimestamp) {
-      return buildSyncExpireTimerMessage(identifier, expireUpdate, timestamp, syncTarget);
-    }
-    window.log.warn('WIP: Building Sync Expire Timer Message failed', dataMessage, expireUpdate);
+
+  if (
+    dataMessage.flags === SignalService.DataMessage.Flags.EXPIRATION_TIMER_UPDATE &&
+    !isEmpty(expireUpdate) &&
+    expireUpdate.lastDisappearingMessageChangeTimestamp
+  ) {
+    const syncExpireTimerMessage = buildSyncExpireTimerMessage(
+      identifier,
+      expireUpdate,
+      timestamp,
+      syncTarget
+    );
+    window.log.warn(
+      `WIP: buildSyncMessage:  \nsyncExpireTimerMessage: ${JSON.stringify(syncExpireTimerMessage)}`
+    );
+    return syncExpireTimerMessage;
   }
+
   return buildSyncVisibleMessage(identifier, dataMessage, timestamp, syncTarget);
 };